1 #ifndef __ALPHA_PCI_H
2 #define __ALPHA_PCI_H
3
4 #ifdef __KERNEL__
5
6 #include <linux/spinlock.h>
7 #include <linux/dma-mapping.h>
8 #include <asm/scatterlist.h>
9 #include <asm/machvec.h>
10
11 /*
12 * The following structure is used to manage multiple PCI busses.
13 */
14
15 struct pci_dev;
16 struct pci_bus;
17 struct resource;
18 struct pci_iommu_arena;
19 struct page;
20
21 /* A controller. Used to manage multiple PCI busses. */
22
23 struct pci_controller {
24 struct pci_controller *next;
25 struct pci_bus *bus;
26 struct resource *io_space;
27 struct resource *mem_space;
28
29 /* The following are for reporting to userland. The invariant is
30 that if we report a BWX-capable dense memory, we do not report
31 a sparse memory at all, even if it exists. */
32 unsigned long sparse_mem_base;
33 unsigned long dense_mem_base;
34 unsigned long sparse_io_base;
35 unsigned long dense_io_base;
36
37 /* This one's for the kernel only. It's in KSEG somewhere. */
38 unsigned long config_space_base;
39
40 unsigned int index;
41 /* For compatibility with current (as of July 2003) pciutils
42 and XFree86. Eventually will be removed. */
43 unsigned int need_domain_info;
44
45 struct pci_iommu_arena *sg_pci;
46 struct pci_iommu_arena *sg_isa;
47
48 void *sysdata;
49 };
50
51 /* Override the logic in pci_scan_bus for skipping already-configured
52 bus numbers. */
53
54 #define pcibios_assign_all_busses() 1
55
56 #define PCIBIOS_MIN_IO alpha_mv.min_io_address
57 #define PCIBIOS_MIN_MEM alpha_mv.min_mem_address
58
59 extern void pcibios_set_master(struct pci_dev *dev);
60
pcibios_penalize_isa_irq(int irq,int active)61 extern inline void pcibios_penalize_isa_irq(int irq, int active)
62 {
63 /* We don't do dynamic PCI IRQ allocation */
64 }
65
66 /* IOMMU controls. */
67
68 /* The PCI address space does not equal the physical memory address space.
69 The networking and block device layers use this boolean for bounce buffer
70 decisions. */
71 #define PCI_DMA_BUS_IS_PHYS 0
72
73 #ifdef CONFIG_PCI
74
75 /* implement the pci_ DMA API in terms of the generic device dma_ one */
76 #include <asm-generic/pci-dma-compat.h>
77
pci_dma_burst_advice(struct pci_dev * pdev,enum pci_dma_burst_strategy * strat,unsigned long * strategy_parameter)78 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
79 enum pci_dma_burst_strategy *strat,
80 unsigned long *strategy_parameter)
81 {
82 unsigned long cacheline_size;
83 u8 byte;
84
85 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
86 if (byte == 0)
87 cacheline_size = 1024;
88 else
89 cacheline_size = (int) byte * 4;
90
91 *strat = PCI_DMA_BURST_BOUNDARY;
92 *strategy_parameter = cacheline_size;
93 }
94 #endif
95
96 /* TODO: integrate with include/asm-generic/pci.h ? */
pci_get_legacy_ide_irq(struct pci_dev * dev,int channel)97 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
98 {
99 return channel ? 15 : 14;
100 }
101
102 extern void pcibios_resource_to_bus(struct pci_dev *, struct pci_bus_region *,
103 struct resource *);
104
105 extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
106 struct pci_bus_region *region);
107
108 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
109
pci_proc_domain(struct pci_bus * bus)110 static inline int pci_proc_domain(struct pci_bus *bus)
111 {
112 struct pci_controller *hose = bus->sysdata;
113 return hose->need_domain_info;
114 }
115
116 #endif /* __KERNEL__ */
117
118 /* Values for the `which' argument to sys_pciconfig_iobase. */
119 #define IOBASE_HOSE 0
120 #define IOBASE_SPARSE_MEM 1
121 #define IOBASE_DENSE_MEM 2
122 #define IOBASE_SPARSE_IO 3
123 #define IOBASE_DENSE_IO 4
124 #define IOBASE_ROOT_BUS 5
125 #define IOBASE_FROM_HOSE 0x10000
126
127 extern struct pci_dev *isa_bridge;
128
129 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
130 size_t count);
131 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
132 size_t count);
133 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
134 struct vm_area_struct *vma,
135 enum pci_mmap_state mmap_state);
136 extern void pci_adjust_legacy_attr(struct pci_bus *bus,
137 enum pci_mmap_state mmap_type);
138 #define HAVE_PCI_LEGACY 1
139
140 extern int pci_create_resource_files(struct pci_dev *dev);
141 extern void pci_remove_resource_files(struct pci_dev *dev);
142
143 #endif /* __ALPHA_PCI_H */
144